The Hope Pro 4 Front Hub provides unsurpassed reliability and it's exceptionally durable. Machined from a single aluminum billet and finished with easily serviceable sealed stainless steel cartridge bearings; this disc brake compatible mountain bike (MTB) hub will last a lot longer than most high-end models from other brands. Durability, reliability and performance are qualities assured by Hope design; they are able to handle the growing demands of modern mountain bike riding, trails and obstacles. The Hope Pro 4 Rear Mountain Bike hub is also very easy to service and requires no proprietary tools, making maintenance simple. From its very first Ti-glide hubs launched back in 1993, Hope has had a reputation for producing some of the most durable and high-quality hubs on the market. The mainstay of this reputation has been its attention to detail in both the bearings it uses and its inspection processes. All bearings are from world-renowned manufacturers to ensure the highest quality. Also every hub shell, freehub and axle are produced in Hope's Barnoldswick factory and checked and inspected to the highest degree.